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Zev Spitz
Zev Spitz

Reputation: 15375

Path as part of pattern matching for method similar to Directory.GetFiles

Directory.GetFiles has an overload that takes a path and a search pattern:

var files = Directory.GetFiles(@"c:\path\to\folder", "*.txt");

to return files within a specified folder, which match the pattern. Is there a built-in .NET method that takes the path as part of the search pattern?

var files1 = Something.GetFiles(@"c:\path\to\folder\*.txt");

Upvotes: 1

Views: 170

Answers (1)

Adriano Repetti
Adriano Repetti

Reputation: 67148

No, there isn't anything like that but I had this need countless times. Fortunately it's easy to write:

public string[] SearchFiles(string query)
{
    return Directory.GetFiles(
        Path.GetDirectoryName(query),
        Path.GetFileName(query));
}

A less raw version may handle more special cases (if you need it):

public string[] SearchFiles(string query)
{
    if (IsDirectory(query))
        return Directory.GetFiles(query, "*.*");

    return Directory.GetFiles(
        Path.GetDirectoryName(query),
        Path.GetFileName(query));
}

private static bool IsDirectory(string path)
{
    if (String.IsNullOrWhiteSpaces(path))
        return false;

    if (path[path.Length - 1] == Path.DirectorySeparatorChar)
        return true;

    if (path[path.Length - 1] == Path.AltDirectorySeparatorChar)
        return true;

    if (path.IndexOfAny(Path.GetInvalidPathChars()) != -1)
        return false;

    return Directory.Exists(path);
}

With this new version (see IsDirectory() code) you may use it like this:

SearchFiles(@"c:\windows\*.*");
SearchFiles(@"c:\windows\");
SearchFiles(@"c:\windows");

Upvotes: 3

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